An observational study in Dentin Sensitivity, sponsored by Universidade Estadual de Ponta Grossa. Completed at 1 site in Brazil. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2013-10-10.
Sponsored by Universidade Estadual de Ponta Grossa · Observational
The calcium containing 35% hydrogen peroxide gel employed in this study can be re-applied 2 days after the first bleaching session without increasing the bleaching-induced tooth sensitivity
The in-office bleaching uses 35% hydrogen peroxide gel which is applied in 2 to 3 sessions usually with one week interval between sessions, without a scientific and plausible reason for this recommendation (. The aim of this study was to evaluate the tooth sensitivity (TS) risk using a shorter interval between clinical sessions. Methods: In this randomized, single-blind study, 40 young patients with color C2 or darker were selected and randomly divided in two groups. In the 7-day group, two bleaching sessions with a 35% hydrogen peroxide gel (Whiteness HP Blue Calcium - FGM) were performed with a one-week interval and in the 2-day group, the same protocol was performed but with a 2-day interval. TS was recorded on a 0-10 visual analog scale up to 48 h after bleaching. The color evaluation was performed at baseline and 30 days after bleaching with a value-oriented shade guide and a spectrophotometer. The absolute risk of TS (%) was evaluated by Fisher´s exact. The TS intensity was evaluated by two-way repeated measured ANOVA and color changes (ΔSGU and ΔE) were evaluated by Student´s t-test (alpha = 5%).
288 studies on the registry are indexed under Dentin Sensitivity; 46 are open to participants now.
Browse Dentin Sensitivity studies →Universidade Estadual de Ponta Grossa is the lead sponsor of 8 studies on the registry; none are open to participants now.
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Participants included in this clinical trial were at least 18 years old and had good general and oral health. Participants were recruited by means of visual communication through posters in the university and in stores at Umuarama city. A total of 116 participants were examined in a dental chair to check if they met the inclusion and exclusion criteria.
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The participants should have:
At least six maxillary and mandibular anterior teeth caries-free. Without restorations on the labial surfaces. The central incisors should be C2 or darker according to a value-oriented shade guide (Vita Lumin).
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Exclusion Criteria:
Pre-existing anterior restorations. Pregnant/lactating. Severe internal tooth discoloration (tetracycline stains, fluorosis, pulpless teeth).
Taking any drug with anti-inflammatory and antioxidant action. Bruxism habits or any other pathology that could cause Tooth Sensbility (such as recession, dentine exposure).
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Standard treatment
bleaching treatments made in 2 days
Tooth sensibility
Time frame: 1 year
Color
Time frame: 1 year
The record gives a start of Aug 2011, a primary completion of Dec 2011 and a completion of Aug 2012. It does not say whether these dates are actual or estimated.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Oct 2013. You cannot join it, but the record below documents what was studied.
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Universidade Estadual de Ponta Grossa